Protiens

Question 1

what are protiens made of?

Structure of protiens

Answer 1

Small molecules called amino acids

Question 2

What makes up amino acids?

Structure of protiens

Answer 2

Carbon, hydrogen, oxygen and nitrogen

Question 3

What are the 4 different groups attatched to the central carbon atom in an amino acid.

Structure of protiens

Answer 3

• An amino group
• A carboxyl group
• Hydrogen atom
• R group (side chain)

Question 4

How many different amino acids are there?

Structure of Protiens

Answer 4

20 differet amino acids with different R groups.

Question 5

Summarise the primary structure of protiens.

Structure of Protiens (primary)

Answer 5

sequence of amino acids that make up polypeptides.
* condensation reaction occurs between the carboxyl grp and one amino acid.
* Covalent bond forms between the two acids and a water molecule is produced.-> Dipeptide molecule produced.

Question 6

Summarise the secondary structure of protiens.

structure of protienss (secondary)

Answer 6

• Primary structure eith coils into a alpha (α) helix or folds to form a beta(β) bleated sheet.
• Secondary structure are held in shape by hydrogen bonds.

Question 7

Summaride the Tertiary structure of a protien

Answer 7

Forms when the secondary structure coils and folds.
* Protien becomes 3D structure held by many different bonds and interactions between the R groups of amino acids which are adjacent to each other.
* Di-sulfide bridges (S-S) occur between two sulfurs.
Sulfur atoms are present in the amino acid R group cysteine.
* Important in determining how enzymes work

Question 8

Summarise the Quaternary